WEST VALLEY CITY, Utah — Jessica Fiveash sees nothing wrong with arming teachers. An educator herself, she learned Thursday how to safely use her 9mm Ruger equipped with a laser sight.

“If we have the ability to stop something, we should do it,” said the elementary school teacher, who along with nearly 200 other teachers in Utah took six hours of free gun training offered by the state’s leading gun lobby.

It is among the latest efforts to arm or train teachers to confront assailants after a gunman killed his mother and went on a rampage Dec. 14 inside Sandy Hook Elementary School in Newtown, Conn., killing 20 children and six adults before killing himself.

In Ohio, a firearms group said it was launching a test program in tactical firearms training for 24 teachers. In Arizona, the attorney general is proposing a change to state law that would allow an educator in each school to carry a gun.

The moves to train teachers come after the National Rifle Association proposed placing armed officers at the nation’s schools, although some schools already have police officers. Parents and educators have questioned how safe the proposal would be and whether it would be economically feasible.

Some educators say it is dangerous to allow guns on campus. Among the potential dangers they point to are teachers being overpowered for their weapons or students getting them and accidentally or purposely shooting classmates.

“It’s a terrible idea,” said Carol Lear, a chief lawyer for the Utah Office of Education. “It’s a horrible, terrible, no-good, rotten idea.”

Kristen Rand, the legislative director for the Violence Policy Center, a gun-control advocacy organization, said to believe that a “teacher would be successful in stopping someone who has made the decision to engage in a shootout is just not rational.”

She added: “No teacher is ever going to be as effective as a trained law enforcement officer.” Even trained police officers don’t always hit their targets, and arming teachers could put innocent students at risk of crossfire, she said.

Gun-rights advocates say teachers can act more quickly than law enforcement in the critical first few minutes to protect children from the kind of deadly shooting that took place in Connecticut. They emphasized the importance of reacting appropriately under pressure.

“We’re not suggesting that teachers roam the halls” looking for an armed intruder, said Clark Aposhian, chairman of the Utah Shooting Sports Council, the state’s biggest gun lobby. “They should lock down the classroom. But a gun is one more option if the shooter (breaks into a classroom).”

The group waived its $50 fee for the training. Instruction featured plastic guns and emphasized that people facing deadly threats should announce or show their gun and take cover before trying to shoot. They cautioned teachers about the liability that comes with packing a gun in public.

“It’s going to be a hassle. It’s another responsibility. You can’t just leave your gun lying around,” Aposhian said. “Not for a minute.”

Florida’s state social services agency investigated Nikolas Cruz’s home life more than a year before police say he killed 17 people at his former high school, closing the inquiry after determining that his “final level of risk is low,” despite learning that the teenager had behavioral struggles and was planning to buy a gun, according to an investigative report.